CMake doesn't find lld-link since 3.18

Compiler: llvm + clang-cl 9

Hi I'm using CMake and vcpkg and since a new update in vcpkg that bumped CMake from 3.17.2 to 3.18.4 I can't cross-compile for Windows on my Ubuntu builder.

[16/17] : && CMAKE_AR-NOTFOUND  /machine:X86 /nologo /out:zlib.lib CMakeFiles/zlib.dir/adler32.obj CMakeFiles/zlib.dir/compress.obj CMakeFiles/zlib.dir/crc32.obj CMakeFiles/zlib.dir/deflate.obj CMakeFiles/zlib.dir/gzclose.obj CMakeFiles/zlib.dir/gzlib.obj CMakeFiles/zlib.dir/gzread.obj CMakeFiles/zlib.dir/gzwrite.obj CMakeFiles/zlib.dir/inflate.obj CMakeFiles/zlib.dir/infback.obj CMakeFiles/zlib.dir/inftrees.obj CMakeFiles/zlib.dir/inffast.obj CMakeFiles/zlib.dir/trees.obj CMakeFiles/zlib.dir/uncompr.obj CMakeFiles/zlib.dir/zutil.obj  && :
FAILED: zlib.lib 
: && CMAKE_AR-NOTFOUND  /machine:X86 /nologo /out:zlib.lib CMakeFiles/zlib.dir/adler32.obj CMakeFiles/zlib.dir/compress.obj CMakeFiles/zlib.dir/crc32.obj CMakeFiles/zlib.dir/deflate.obj CMakeFiles/zlib.dir/gzclose.obj CMakeFiles/zlib.dir/gzlib.obj CMakeFiles/zlib.dir/gzread.obj CMakeFiles/zlib.dir/gzwrite.obj CMakeFiles/zlib.dir/inflate.obj CMakeFiles/zlib.dir/infback.obj CMakeFiles/zlib.dir/inftrees.obj CMakeFiles/zlib.dir/inffast.obj CMakeFiles/zlib.dir/trees.obj CMakeFiles/zlib.dir/uncompr.obj CMakeFiles/zlib.dir/zutil.obj  && :
/bin/sh: 1: CMAKE_AR-NOTFOUND: not found
ninja: build stopped: subcommand failed.

Using CMake version 3.17.2 works fine:

[16/17] : && /usr/bin/lld-link-9 /lib  /machine:X86 /nologo /out:zlib.lib CMakeFiles/zlib.dir/adler32.obj CMakeFiles/zlib.dir/compress.obj CMakeFiles/zlib.dir/crc32.obj CMakeFiles/zlib.dir/deflate.obj CMakeFiles/zlib.dir/gzclose.obj CMakeFiles/zlib.dir/gzlib.obj CMakeFiles/zlib.dir/gzread.obj CMakeFiles/zlib.dir/gzwrite.obj CMakeFiles/zlib.dir/inflate.obj CMakeFiles/zlib.dir/infback.obj CMakeFiles/zlib.dir/inftrees.obj CMakeFiles/zlib.dir/inffast.obj CMakeFiles/zlib.dir/trees.obj CMakeFiles/zlib.dir/uncompr.obj CMakeFiles/zlib.dir/zutil.obj  && :
[16/17] cd /vcpkg/buildtrees/zlib/x86-windows-nemirtingas-rel && /vcpkg/downloads/tools/cmake-3.17.2-linux/cmake-3.17.2-Linux-x86_64/bin/cmake -P cmake_install.cmake

I use this toolchain: https://github.com/Nemirtingas/clang-msvc-sdk

It also doesn't work on CMake 3.19.0 and 3.19.1.